Bad, lame, stupid, and dumb. Basically, this tries to make unarmed combat viable in a system with ranged weapons, and unsurprisingly it fails miserably. Why each culture/race/large group would evolve a unique version of unarmed combat without any technological or social imperative is ignored by the writers.

Worst of all, even if you decide to run Jackie Chan Meets Mutants, the mechanics themselves are incredibly clumsy.